fe4c75c272ca27de55c0b42396c47f2b00637a4a
jnavarr5
  Mon Sep 28 16:36:20 2026 -0700
Linking the encode4ProCap trackDb.ra, saying why PRO-cap and contribution scores are hg38 only on the container page, and limiting the ProCapNet prediction claim to the primary chromosomes, refs #35528

diff --git src/hg/makeDb/trackDb/human/transcriptionStart.html src/hg/makeDb/trackDb/human/transcriptionStart.html
index 88bf531564e..9287eae7c91 100644
--- src/hg/makeDb/trackDb/human/transcriptionStart.html
+++ src/hg/makeDb/trackDb/human/transcriptionStart.html
@@ -34,33 +34,35 @@
 </p>
 
 <ul>
 <li>PRO-cap: initiation events measured
 directly by PRO-cap in six cell lines by ENCODE 4. Available on GRCh38/hg38
 only.</li>
 <li>ProCapNet: genome-wide, base-resolution
 predictions of initiation from DNA sequence alone, from six models each trained
 on one of those cell lines, together with per-base scores showing which bases
 each model used. The predictions are available on GRCh38/hg38 and
 T2T-CHM13/hs1; the per-base scores are available on GRCh38/hg38 only.</li>
 </ul>
 
 <p>
 Each track has its own description page covering what it measures or predicts,
-how it was made, and how to download it. The PRO-cap experiments and the
-contribution scores were produced against GRCh38, which is why neither is on
-T2T-CHM13. More TSS evidence tracks will be added to this collection over time.
+how it was made, and how to download it. The PRO-cap experiments were processed
+by ENCODE against GRCh38 only, and the contribution scores are computed at MANE
+Select transcription start sites, which are not defined for T2T-CHM13, so neither
+is on T2T-CHM13. More TSS evidence tracks will be added to this collection over
+time.
 </p>
 
 <h2>Display Conventions and Configuration</h2>
 
 <p>
 Tracks are grouped by the evidence they carry, with measurements before
 predictions. Signal tracks that distinguish the two strands draw the plus strand
 upward and the minus strand downward, so a divergent promoter reads as a pair of
 peaks straddling the element.
 </p>
 
 <h2>Data Access</h2>
 
 <p>
 Each track listed above has its own description page with details on methods,